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MIPS: ath79: Use the common clk API

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Make the code simpler and open the way for device tree clocks.

[ralf@linux-mips.org: Resolved conflict with 2a552da6 (MIPS/IRQCHIP: Move
irq_chip from arch/mips to drivers/irqchip.)]

Signed-off-by: Alban Bedel <albeu@free.fr>
Cc: linux-mips@linux-mips.org
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: Qais Yousef <qais.yousef@imgtec.com>
Cc: Wolfram Sang <wsa@the-dreams.de>
Cc: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Cc: Gabor Juhos <juhosg@openwrt.org>
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/9774/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Alban Bedel 2015-04-19 14:30:04 +02:00 committed by Ralf Baechle
parent 24b0e3e84f
commit 411520af8e
2 changed files with 3 additions and 27 deletions
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1
arch/mips/Kconfig
View File

@ -124,6 +124,7 @@ config ATH79
select CSRC_R4K
select DMA_NONCOHERENT
select HAVE_CLK
select COMMON_CLK
select CLKDEV_LOOKUP
select IRQ_MIPS_CPU
select MIPS_MACHINE

29
arch/mips/ath79/clock.c
View File

@ -17,6 +17,7 @@
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/clkdev.h>
#include <linux/clk-provider.h>
#include <asm/div64.h>
@ -28,21 +29,15 @@
#define AR724X_BASE_FREQ 5000000
#define AR913X_BASE_FREQ 5000000
struct clk {
unsigned long rate;
};
static void __init ath79_add_sys_clkdev(const char *id, unsigned long rate)
{
struct clk *clk;
int err;
clk = kzalloc(sizeof(*clk), GFP_KERNEL);
clk = clk_register_fixed_rate(NULL, id, NULL, CLK_IS_ROOT, rate);
if (!clk)
panic("failed to allocate %s clock structure", id);
clk->rate = rate;
err = clk_register_clkdev(clk, id, NULL);
if (err)
panic("unable to register %s clock device", id);
@ -468,23 +463,3 @@ ath79_get_sys_clk_rate(const char *id)
return rate;
}
/*
* Linux clock API
*/
int clk_enable(struct clk *clk)
{
return 0;
}
EXPORT_SYMBOL(clk_enable);
void clk_disable(struct clk *clk)
{
}
EXPORT_SYMBOL(clk_disable);
unsigned long clk_get_rate(struct clk *clk)
{
return clk->rate;
}
EXPORT_SYMBOL(clk_get_rate);